Islam: A "Religion Of Peace?"

Many sources have stated that Islam has never gone through its Reformation like Christianity has (link). However, how successful have so-called "Reformations" been? Every major religion seems to have factions on the conservative-liberal spectrum. That said, there seems to be a particular problem with Islam regarding peacefully existing in nations with secular governments (link). This article from the Friendly Atheist Blog seems to sum up the problem:

However,

Based on the above, it is my opinion that there will never be peace where Islam is the majority religion until the present "Revelations" are over-written OR the majority of Islam just truly "Reforms" to the point of being secular in culture.